gecko/layout/tables/nsITableLayoutStrategy.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:cindent:ts=4:et:sw=4:
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla's table layout code.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* L. David Baron <dbaron@dbaron.org> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* interface for the set of algorithms that determine column and table
* widths
*/
#ifndef nsITableLayoutStrategy_h_
#define nsITableLayoutStrategy_h_
#include "nscore.h"
#include "nsCoord.h"
class nsRenderingContext;
struct nsHTMLReflowState;
class nsITableLayoutStrategy
{
public:
virtual ~nsITableLayoutStrategy() {}
/** Implement nsIFrame::GetMinWidth for the table */
virtual nscoord GetMinWidth(nsRenderingContext* aRenderingContext) = 0;
/** Implement nsIFrame::GetPrefWidth for the table */
virtual nscoord GetPrefWidth(nsRenderingContext* aRenderingContext,
bool aComputingSize) = 0;
/** Implement nsIFrame::MarkIntrinsicWidthsDirty for the table */
virtual void MarkIntrinsicWidthsDirty() = 0;
/**
* Compute final column widths based on the intrinsic width data and
* the available width.
*/
virtual void ComputeColumnWidths(const nsHTMLReflowState& aReflowState) = 0;
/**
* Return the type of table layout strategy, without the cost of
* a virtual function call
*/
enum Type { Auto, Fixed };
Type GetType() const { return mType; }
protected:
nsITableLayoutStrategy(Type aType) : mType(aType) {}
private:
Type mType;
};
#endif /* !defined(nsITableLayoutStrategy_h_) */